21961840

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1013}}^1$

素因数の和:1297

約数の個数: 40

約数和(自身を含む): 51300288

約数和(自身を除く): 29338448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 1013, 1084, 1355, 2026, 2168, 2710, 4052, 4336, 5065, 5420, 8104, 10130, 10840, 16208, 20260, 21680, 40520, 81040, 274523, 549046, 1098092, 1372615, 2196184, 2745230, 4392368, 5490460, 10980920, 21961840]

約数ペア:

[(1, 21961840), (2, 10980920), (4, 5490460), (5, 4392368), (8, 2745230), (10, 2196184), (16, 1372615), (20, 1098092), (40, 549046), (80, 274523), (271, 81040), (542, 40520), (1013, 21680), (1084, 20260), (1355, 16208), (2026, 10840), (2168, 10130), (2710, 8104), (4052, 5420), (4336, 5065)]